How install gcc with deb

[Ralf Mardorf]

On Sat, 2018-11-17 at 14:53 -0500, Robert Heller wrote:
> See the sentence you quoted: "If this 'Other' computer also has Ubuntu 18.04 
> installed on it you can do:".  Yes, the presumption is that the networked 
> machine is running the same release as the non-networked machine.

While a release model distro isn't that sensitive regarding partial
upgrades, it still inherits a risk. If the install that isn't connected
to the Internet has got different additional packages installed, than
the install connected to the Internet, a partial upgrade is risky.

IOW the same Ubuntu release needs to be a default Ubuntu install without
any additional package installed or both installs need to have the same
additional packages installed and the cache of the machine installed to
the Internet must contain all of them. If so, it's required to do a
full-upgrade. If not, there potentially is a risk that a partial upgrade
breaks the install. This risk isn't that critical as for a rolling
release model distro, but even for a release model distro there at least
is a minimal insecurity doing partial upgrades.

"Minimal insecure" is similar to "a little bit pregnant", it's not a
matter of value.